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<div class="textblock"><p>This file contains the main implementation of the Xilinx HDCP 2.2 Transmitter device driver.</p>
<pre>
MODIFICATION HISTORY:</pre><pre>Ver   Who    Date     Changes
</p>
<hr/>
<p>
1.00  JO     06/24/15 Initial release.
1.01  MH     01/15/16 Replaced function XHdcp22Tx_SetDdcHandles with
                      XHdcp22Tx_SetCallback. Removed test directives.
1.02  MG     02/25/16 Added authenticated callback and GetVersion.
1.03  MG     02/29/16 Added XHdcp22Cipher_Disable in function XHdcp22Tx_Reset.
1.04  MH     03/14/16 Updated StateA5 to check re-authentication request
                      before enabling the cipher.
2.00  MH     06/28/16 Updated for repeater downstream support.
2.01  MH     02/13/17 1. Fixed function XHdcp22Tx_IsInProgress to correctly
                         return TRUE while state machine is executing.
                      2. Fixed checking of seq_num_V for topology propagation.
                      3. Updated state A0 to set 100ms timer before sending
                         AKE_Init message to ensure encryption is disabled.
                      4. Fixed function XHdcp22Tx_UpdatePairingInfo to check
                         for empty slots before overriding entry.
                      5. Fixed problem with pairing table update that was
                         causing corrupted entries.
                      6. Update to check return status of DDC read/write.
                      7. Fixed compiler warnings.
2.20  MH     04/12/17 Added function XHdcp22Tx_IsDwnstrmCapable.
2.30  MH     07/06/17 1. Updated for 64 bit ARM support.
                      2. Added HDCP2Capable check for re-authentication
                      3. Update cipher enablement
                      4. Fix in XHdcp22Tx_WaitForReceiver to poll RxStatus
                         based on fixed interval.
                      5. Fix in XHdcp22Tx_WaitForReceiver to wait for READY
                         and non-zero Message_Size before reading message
                         buffer.
                      6. Check return status of DDC write/read when polling
                         RxStatus register.
2.31  YB     03/28/19 Moved the reading of the DDC status from
                         XHdcp22Tx_TimerHandler to XHdcp22Tx_Poll.
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